Supertuxkart can run if you know how to get it running, which I don't
Time to check for updates, yippee new 1.0
Some of the cooler games require OpenGL which is still a work in progress.
Raspbian is a bit behind with OpenGL at version 13 and latest Mesa3d is 19 which has newer Pi code in it.
"Coolest" is personal taste.
I spend way too much time playing Warzone2100, which nearly works ok last time I tried installing it.
I have not tried it on the new 3B+.
By mid year when Kernel 4.19 is in Raspbian we will probably get Mesa19+.
It should by then make it easier to port games that have high OpenGL requirements like 0AD.
Warzone2100 and 0AD are the two games I use to test Pi OpenGL.
Years ago WZ did not work, now it does, sort of, 0AD now at least boots.
STK is the 3rd game I use for testing, might try again now that the new version is out.
If STK runs then there is a good chance Stunt Rally can work.
Networked racing games, that is cool
Imagine Pi based DIY home racing arcades systems.
Schools teach wood work any more?
I'm dancing on Rainbows.
Raspberries are not Apples or Oranges